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Aluminum–Titanium Alloy Back Contact Reducing Production Cost of Silicon Thin-Film Solar Cells

Author

Listed:
  • Hsin-Yu Wu

    (Graduate Institute of Optoelectronic Engineering and Department of Electrical Engineering, National Chung Hsing University, Taichung 40227, Taiwan)

  • Chia-Hsun Hsu

    (Department of Materials Science and Engineering, Da-Yeh University, Changhua 51591, Taiwan)

  • Shui-Yang Lien

    (Department of Materials Science and Engineering, Da-Yeh University, Changhua 51591, Taiwan)

  • Yeu-Long Jiang

    (Graduate Institute of Optoelectronic Engineering and Department of Electrical Engineering, National Chung Hsing University, Taichung 40227, Taiwan)

Abstract

In this study, metal films are fabricated by using an in-line reactive direct current magnetron sputtering system. The aluminum–titanium (AlTi) back contacts are prepared by changing the pressure from 10 mTorr to 25 mTorr. The optical, electrical and structural properties of the metal back contacts are investigated. The solar cells with the AlTi had lower contact resistance than those with the silver (Ag) back contact, resulting in a higher fill factor. The AlTi contact can achieve a solar cell conversion efficiency as high as that obtained from the Ag contact. These findings encourage the potential adoption of AlTi films as an alternative back contact to silver for silicon thin-film solar cells.

Suggested Citation

  • Hsin-Yu Wu & Chia-Hsun Hsu & Shui-Yang Lien & Yeu-Long Jiang, 2016. "Aluminum–Titanium Alloy Back Contact Reducing Production Cost of Silicon Thin-Film Solar Cells," Energies, MDPI, vol. 9(11), pages 1-6, November.
    • Handle: RePEc:gam:jeners:v:9:y:2016:i:11:p:975-:d:83450
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